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Dirt Bike Air and Fuel

Dirt Bike Air and Fuel

Dirt Bike Air and Fuel

Dirt Bike Air & Fuel Systems at JJ Motorsports

Optimize your bike’s performance with high-quality air and fuel components from JJ Motorsports. Browse air filters, carburetors, and fuel system parts engineered to deliver clean airflow and a consistent fuel mix for peak efficiency. Ensure your bike runs smoothly by pairing these with other essential off-road dirt bike accessories.

Shop trusted brands like Motion Pro for cables and Uni Filter for high-flow filters. Explore related categories such as Dirt Bike Engine Parts for rebuilds or Dirt Bike Exhaust for complete tuning.

Top Dirt Bike Air & Fuel Products

Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • MIKUNI Flat Slide Carburetor - 34mm TM34-2

    MIKUNI Flat Slide Carburetor - 34mm TM34-2

    MIKUNI

    $229.00
    Flat slide design helps create a smooth bore effect, increasing air flow, Significant performance improvements over older round slide carbs, Great throttle response because of more precise fuel metering, All are center-pull style throttle, unless noted...
    TM34
    SKU:
    TM34
    Availability:
    Ships Same Business Day
    Weight:
    1.44 LBS
    NEEDLE JET:
    Q-2 (389 SERIES)
    SLIDE CUTAWAY:
    -
    STYLE:
    FLAT SLIDE
    AIR JET:
    NONE
    NEEDLE VALVE:
    4.0
    RIDING STYLE:
    ATV
    RIDING STYLE:
    STREET
    SPIGOT MOUNTING OUTSIDE DIAMETER:
    40
    UNITS:
    EACH
    PRODUCT NAME:
    CARBURETOR CENTER PULL
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    CARBURETOR SIZE METRIC:
    34.00 MM
    MAIN JET:
    280 (4/042)
    NEEDLE:
    5FP17
    PILOT JET:
    50 (VM22/210)
    Qty in Cart: 0
    Quantity:
    Price:
    $229.00
    Subtotal:
  • MIKUNI Pilot Jet #40 4-Pack VM22/210-40

    MIKUNI Pilot Jet #40 4-Pack VM22/210-40

    MIKUNI

    $5.20
    These genuine Mikuni pilot jets fit all VM, TM and aftermarket TMX carbs, Sold to dealer 4-pack; sold to consumer as each, Made in Japan
    KM540
    SKU:
    KM540
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    COLOR/FINISH:
    BRASS
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    BASE COLOR:
    BRASS
    HEAD DIAMETER METRIC:
    4.00 MM
    JET SIZE:
    40
    OVERALL LENGTH METRIC:
    14.00 MM
    RIDING STYLE:
    STREET
    TYPE:
    PILOT
    MATERIAL:
    BRASS
    FEATURES:
    FOR VM CARBURETORS
    PRODUCT NAME:
    JET
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    UNITS:
    4 PACK
    Qty in Cart: 0
    Quantity:
    Price:
    $5.20
    Subtotal:
  • MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-60

    MIKUNI Super BN Series Pilot Jet - 4-Pack N100606-60

    MIKUNI

    $5.20
    Sold to dealers 4 per pack; sold to consumer as each, Made in Japan
    KN10060660
    SKU:
    KN10060660
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    JET SIZE:
    60
    UNITS:
    4 PACK
    MODEL:
    MIKUNI
    PRODUCT NAME:
    JET
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    PILOT
    $5.20
    Qty in Cart: 0
    Quantity:
    Price:
    $5.20
    Subtotal:
  • MIKUNI BSR Series Air Cut-Off Valve Assembly MK-405

    MIKUNI BSR Series Air Cut-Off Valve Assembly MK-405

    MIKUNI

    $22.99
    Rebuild kit for air cutoff valves on Mikuni BSR33 and BSR42 carburetors, Kit includes an aluminum cover, diaphragm, springs and screw, Made in Japan
    10030416
    SKU:
    10030416
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    UTV
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    AIR CUT-OFF
    RIDING STYLE:
    ATV
    $22.99
    Qty in Cart: 0
    Quantity:
    Price:
    $22.99
    Subtotal:
  • K & N Air Filter - XR100/TRX90 HA-1088

    K & N Air Filter - XR100/TRX90 HA-1088

    K & N

    $86.99
    Fits directly into OEM airbox with application specific Sealing Bead to ensure a precise fit, Fuel-management modifications are not required for increased performance, Pleated media provides a large filtration area offering long service intervals,...
    HA1088
    SKU:
    HA1088
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    COLOR/FINISH:
    BLACK
    MOUNTING FLANGE/INSIDE DIAMETER IMPERIAL:
    1.938'
    FILTER HEIGHT IMPERIAL:
    3.00'
    FILTER SHAPE:
    ROUND
    PRODUCT NAME:
    AIR FILTER
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    BASE COLOR:
    BLACK
    FILTER MEDIA MATERIAL:
    COTTON GAUZE
    FLANGE POSITION:
    NONE
    MODEL:
    HIGH-FLOW
    COLOR/FINISH:
    RED
    FEATURES:
    WASHABLE
    $86.99
    Qty in Cart: 0
    Quantity:
    Price:
    $86.99
    Subtotal:
  • SHINDY Carburetor Repair Kit - Kawasaki 03-117

    SHINDY Carburetor Repair Kit - Kawasaki 03-117

    SHINDY

    $32.60
    Award winning rubber-top float valves are made using the highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol, The jets included in each kit are for common sizes; according to riding conditions and riding preference,...
    10031034
    SKU:
    10031034
    Availability:
    Ships Same Business Day
    Weight:
    15.10 LBS
    RIDING STYLE:
    ATV
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    REPAIR KIT
    COLOR/FINISH:
    BLACK
    TYPE:
    CARBURETOR
    UNITS:
    KIT
    $32.60
    Qty in Cart: 0
    Quantity:
    Price:
    $32.60
    Subtotal:
  • SHINDY Carburetor Repair Kit - Polaris 03-409

    SHINDY Carburetor Repair Kit - Polaris 03-409

    SHINDY

    $30.50
    Award winning rubber-top float valves are made using the highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol, The jets included in each kit are for common sizes; according to riding conditions and riding preference,...
    10031102
    SKU:
    10031102
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    UNITS:
    KIT
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    REPAIR KIT
    COLOR/FINISH:
    BLACK
    TYPE:
    CARBURETOR
    RIDING STYLE:
    ATV
    $30.50
    Qty in Cart: 0
    Quantity:
    Price:
    $30.50
    Subtotal:
  • SHINDY Carburetor Repair Kit - Polaris 03-411

    SHINDY Carburetor Repair Kit - Polaris 03-411

    SHINDY

    $30.80
    Award winning rubber-top float valves are made using the highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol, The jets included in each kit are for common sizes; according to riding conditions and riding preference,...
    10031104
    SKU:
    10031104
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    REPAIR KIT
    COLOR/FINISH:
    BLACK
    UNITS:
    KIT
    RIDING STYLE:
    ATV
    TYPE:
    CARBURETOR
    $30.80
    Qty in Cart: 0
    Quantity:
    Price:
    $30.80
    Subtotal:
  • SHINDY Carburetor Repair Kit - Polaris 03-412

    SHINDY Carburetor Repair Kit - Polaris 03-412

    SHINDY

    $38.30
    Award winning rubber-top float valves are made using the highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol, The jets included in each kit are for common sizes; according to riding conditions and riding preference,...
    10031105
    SKU:
    10031105
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    ATV
    UNITS:
    KIT
    BASE COLOR:
    BLACK
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    CARBURETOR
    $38.30
    Qty in Cart: 0
    Quantity:
    Price:
    $38.30
    Subtotal:
  • SHINDY Carburetor Repair Kit - Polaris 03-413

    SHINDY Carburetor Repair Kit - Polaris 03-413

    SHINDY

    $32.60
    Award winning rubber-top float valves are made using the highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol, The jets included in each kit are for common sizes; according to riding conditions and riding preference,...
    10031106
    SKU:
    10031106
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BASE COLOR:
    BLACK
    RIDING STYLE:
    ATV
    UNITS:
    KIT
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    CARBURETOR
    $32.60
    Qty in Cart: 0
    Quantity:
    Price:
    $32.60
    Subtotal:
  • SHINDY Carburetor Repair Kit - Polaris 03-416

    SHINDY Carburetor Repair Kit - Polaris 03-416

    SHINDY

    $38.30
    Award winning rubber-top float valves are made using the highest quality rubber and a plated body for resistance to harsh gas, ethanol and methanol, The jets included in each kit are for common sizes; according to riding conditions and riding preference,...
    10031109
    SKU:
    10031109
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    BASE COLOR:
    BLACK
    RIDING STYLE:
    ATV
    TYPE:
    CARBURETOR
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    REPAIR KIT
    UNITS:
    KIT
    $38.30
    Qty in Cart: 0
    Quantity:
    Price:
    $38.30
    Subtotal:
  • MIKUNI Needle and Seat 786-46001-3.0

    MIKUNI Needle and Seat 786-46001-3.0

    MIKUNI

    $24.15
    Genuine Mikuni needle and seat assemblies provide reliable performance, Check application and size of needle and seat assembly before ordering, Made to the highest standards, Made in Japan
    7864600130
    SKU:
    7864600130
    Availability:
    Ships Same Business Day
    Weight:
    0.31 LBS
    $24.15
    Qty in Cart: 0
    Quantity:
    Price:
    $24.15
    Subtotal:
  • MIKUNI Needle and Seat 786-46001-3.3

    MIKUNI Needle and Seat 786-46001-3.3

    MIKUNI

    $24.15
    Genuine Mikuni needle and seat assemblies provide reliable performance, Check application and size of needle and seat assembly before ordering, Made to the highest standards, Made in Japan
    7864600133
    SKU:
    7864600133
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    $24.15
    Qty in Cart: 0
    Quantity:
    Price:
    $24.15
    Subtotal:
  • MIKUNI Needle and Seat 786-46001-3.5

    MIKUNI Needle and Seat 786-46001-3.5

    MIKUNI

    $24.15
    Genuine Mikuni needle and seat assemblies provide reliable performance, Check application and size of needle and seat assembly before ordering, Made to the highest standards, Made in Japan
    7864600135
    SKU:
    7864600135
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    $24.15
    Qty in Cart: 0
    Quantity:
    Price:
    $24.15
    Subtotal:
  • MIKUNI Jet Needle J8-7DH02

    MIKUNI Jet Needle J8-7DH02

    MIKUNI

    $10.50
    Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...
    7DH2
    SKU:
    7DH2
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    MODEL:
    J8-7DH02
    PRODUCT NAME:
    JET
    RIDING STYLE:
    UTV
    TYPE:
    NEEDLE
    Qty in Cart: 0
    Quantity:
    Price:
    $10.50
    Subtotal:
  • MIKUNI Jet Needle J8-7DH03

    MIKUNI Jet Needle J8-7DH03

    MIKUNI

    $10.50
    Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...
    7DH3
    SKU:
    7DH3
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    EACH
    TYPE:
    NEEDLE
    MODEL:
    J8-7DH03
    PRODUCT NAME:
    JET
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    $10.50
    Qty in Cart: 0
    Quantity:
    Price:
    $10.50
    Subtotal:
  • MIKUNI Jet Needle J8-7DH05

    MIKUNI Jet Needle J8-7DH05

    MIKUNI

    $10.50
    Fitments include several Mikuni VM model and some OE Mikuni carburetors, Jet needles control the fuel mixture in the mid-range throttle position, Some jet needles don't have measurements provided by Mikuni, Use charting to verify dimensions in...
    7DH5
    SKU:
    7DH5
    Availability:
    Ships Same Business Day
    Weight:
    1.00 LBS
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    ATV
    UNITS:
    EACH
    PRODUCT NAME:
    JET
    TYPE:
    NEEDLE
    MODEL:
    J8-7DH05
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    $10.50
    Qty in Cart: 0
    Quantity:
    Price:
    $10.50
    Subtotal:
  • MIKUNI Main Jet - #150 - 4-Pack N102221-150

    MIKUNI Main Jet - #150 - 4-Pack N102221-150

    MIKUNI

    $5.20
    Check dimensions before ordering, For CV and Power Jet carburetors as well as other OE applications that originally came with a N102.221 main jet, Sold to dealer in 4-pack, Made in Japan
    KN102221150
    SKU:
    KN102221150
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    JET
    TYPE:
    MAIN
    UNITS:
    4 PACK
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    JET SIZE:
    150
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    UTV
    MATERIAL:
    BRASS
    MODEL:
    MIKUNI
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    WATERCRAFT
    $5.20
    Qty in Cart: 0
    Quantity:
    Price:
    $5.20
    Subtotal:
  • MIKUNI Main Jet - #152.5 - 4-Pack N102221-1525

    MIKUNI Main Jet - #152.5 - 4-Pack N102221-1525

    MIKUNI

    $5.20
    Check dimensions before ordering, For CV and Power Jet carburetors as well as other OE applications that originally came with a N102.221 main jet, Sold to dealer in 4-pack, Made in Japan
    KN1022211525
    SKU:
    KN1022211525
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MATERIAL:
    BRASS
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    MODEL:
    MIKUNI
    RIDING STYLE:
    WATERCRAFT
    JET SIZE:
    152.5
    PRODUCT NAME:
    JET
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    TYPE:
    MAIN
    UNITS:
    4 PACK
    $5.20
    Qty in Cart: 0
    Quantity:
    Price:
    $5.20
    Subtotal:
  • MIKUNI Main Jet - #155 - 4-Pack N102221-155

    MIKUNI Main Jet - #155 - 4-Pack N102221-155

    MIKUNI

    $5.20
    Check dimensions before ordering, For CV and Power Jet carburetors as well as other OE applications that originally came with a N102.221 main jet, Sold to dealer in 4-pack, Made in Japan
    KN102221155
    SKU:
    KN102221155
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    SNOW
    RIDING STYLE:
    STREET
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    MODEL:
    MIKUNI
    PRODUCT NAME:
    JET
    RIDING STYLE:
    ATV
    TYPE:
    MAIN
    JET SIZE:
    155
    MATERIAL:
    BRASS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    4 PACK
    $5.20
    Qty in Cart: 0
    Quantity:
    Price:
    $5.20
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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